Robert De Niro and Michael Douglas making The Hangover with old people, basically

For those who enjoyed The Hangover but wish it had more pensive reflections on mortality and Cialis jokes, CBS Films is prepping Last Vegas, a comedy about four older men throwing a Las Vegas bachelor party for the group's final unmarried holdout. Jon Turteltaub—of National Treasure and While You Were Sleeping—will utilize his talents for contrivance and sentiment on a story that so far has confirmed Michael Douglas as the soon-to-be-former bachelor and Robert De Niro as his "party-averse" pal (and former romantic rival) who reluctantly comes along and says cranky, modern-day De Niro things. Casting now turns to who will round out the quartet of withered former leads officially surrendering to their Sunshine Boys/Grumpy Old Men august years, with Vulture saying at least one role will likely go to Christopher Walken, while the other will likely go to the grim specter of death.